Mr. Gasket 8703 Hot Rod Calculator User Manual
Page 56
54 —
H
ot
r
od
C
alC
™
* Repeated presses of
will toggle through the inputs and outputs,
starting with the entered Stroke.
— do noT Clear CalCUlaTor —
At 4,000 RPM, that is a Piston Speed of 2,320 feet per minute or
about 707.1 meters per minute. What about at 5,000 RPM?
KeysTroKe
disPlay
3. Enter the new RPM for which you want to determine Piston
Speed:
rPM 5000.
4. Calculate the Piston Speed at 5,000 RPM:
FPM 2900.*
M/Min 883.92
* At 5,000 RPM, your Piston Speed is 2,900 feet per minute and is
pushing the edge of what modern metal materials can handle, even in
short durations.
rPM — Based on Piston Speed and Stroke
your Hot Rod Calc can also calculate an RPM limit should you
want to calculate a limit based on a particular Piston Speed. Cal-
culate an RPM with a Piston Speed of 3,500 feet per minute and
a
Stroke of 3.48 inches.
KeysTroKe
disPlay
0.
1. Enter the Piston Speed for which you want to determine an
RPM limit, along with Stroke of 3.48:
fPM 3500.
sTroK 3.48
in
2. Calculate the RPM limit:
*
rPM 6034.483
* Repeated presses of
will toggle through the inputs and outputs,
starting with the entered Stroke.
(cont'd)
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